Drilling-bit socket.



I WIRUNYAN. I DRILLING BIT SOCKET. APPLICATION FILED JUNE 26. I916- Patented Feb. 27, 1917.

Ina-.1.

War/14m WILLIAM RUNYAN, OF CLINTON, INDIANA.

DRILLING-BIT SOCKET.

To all whom it may concern:

Be it known that I, WILLIAM RUNYAN, a citizen of the United States, residing at Clinton, in the county of Vermilion and State of Indiana, have invented certain new and useful Improvements in Drilling-Bit Sockets; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to new and useful improvements in drilling bit sockets especially adapted for use with the class of coal or rock mining drills.

' The primary object of the invention is the provision of a socket of this character which is either square or substantially rectangular, and which is adapted to receive the extension bit or the end of the stock, and having the same bearing on the slotted portion of the interior of the socket, and also enabling it to be properly centered.

Another object of the invention is the provision of means whereby the ends of the stocks now in common use may be easily altered so as to be engaged with these sockets to prevent accidental displacement, and the same can be readily and easily withdrawn from operative position.

Another object of this invention is to pro vide a device of this character which will be comparatively simple and inexpensive in construction, and one which will be very eflicient in operation.

With these and numerous other objects in view, the invention consists of the novel features of construction and the combination and arrangement of parts as will be hereinafter described and more particularly set forth in the specification and claims.

In the accompanying drawingsa- Figure 1 is a side elevation showing the parts of this device assembled;

Fig. 2 is a top plan view of the'same;

Fig. 3 is a vertical transverse section taken on the line 33 of Fig. 1;

Fig. 4 shows a socket and pin partly assembled, parts of these partsbeing shown in section, and

Fig. 5 is a view similar to Fig. 4, only showing a slightly modified type of the invention.

To illustrate the application of the present invention there has been shown in the accompanying drawings a portion of .a con-v Specification. of Letters Patent. Patented .Fejm 2'7 1917. Application filed June 26, 1916.

Serial No. 105,863.

In carrying out the invention, the drill is provided at its rear end with a socket 3, whlch is substantially rectangular having four sides, and taperlng from its open end 4 toward its closed end 5 to which the drill is attached. e

One of the sides of .the socket3 which is designated by the numeral 3 is provided adjacent the open end of the socket with a cut away portion 6, while the opposite side 7 of the socket is provided with an opening 8 therein'extending from opposite the inner edge of said cut away portion to a point adjacent the closed end of the socket. Between the inner edge of the opening 8 and the bottom of the socket is a space. The side walls of the socket 3 between the sides in which the opening and cut away portion are positioned are provided with small openings 10 therethrough. V

The forward end of the stock 2 has positioned thereon a projecting pin 11 with the tapering sides adapted to be positioned in the socket 3, and the pin llis provided adjacent its extremity 12 with a longitudinally extending elongated slot 13. The pin 11 is adapted to be positioned within the socket 3 and the same will be interlocked therewith to hold the drill and stock together in a manner to be herein more fully described. I The side 3 of the socket 3 has projecting inwardly therefrom adjacent the opening 8 in the opposite side, a laterally projecting lug 14 which is positioned adjacent the inner edge of the opening 8 and extends to a point adjacent the opposite side of the socket. This lug is adapted to be positioned through the slot 13 in the pin 11 when the said pin is positioned in the socket to interlock the parts of the device for simultaneous rotation and to prevent endwise separation of the members when disposed in longitudinal alinement.

The opening 8 andcut away portion 6 in the opposite sides of the socket 3 are so arranged that when the parts of this device are separated and it is desired to interlock the same, the pin 11 may be inserted into the socket3 through the cut away portion 6,

at an angle to the alinement of these two parts, as clearly shown in Fig. 4 of the drawings. When the extremity 12 of the pin 11 abuts against the inner edge of the open ing 8, the side movement of the stock will swing the end of the pin 11 into longitudinal alinement with the socket and the slot 13 will be positioned over the lug 14. When in this position the lug i l will be disposed adjacent the inner end of the slot in the pin, whereupon pushing the two members together the end of the pin will be disposed down into the space between the bottom of the socket and the opening 8, to securely hold these parts in position. this connection the drill socket and the stock will be interlocked for simultaneous rotation, and they will be prevented from endwise separation.

When in operative position the extremity 12 of the pin will be positioned against the bottom of the socket, and when it is desired to withdraw the pin the same is enabled to be drawn a short distance so as to give a sudden jerk to release the bit from the coal or rock in case it be caught therein. The stock may be then moved sidewise so that the slot is disengaged from the lug 14, whereupon the pin will be disposed at an angle and may be easily withdrawn from the socket.

(Ewing to the fact that the slot 13 extends entirely through the end of the pin 11, this pin may be inserted within the socket at either side.

In Fig. 5 of the drawing I have shown a slightly different type of drilling bit socket, which while it embodies the principle of this invention, the parts of the same are slightly differently shaped. The socket used in this device which is designated by the numeral 3", is flattened, while th projecting pin 11 of the stock is flattened to correspond with the same so that it will easily slide therein. The socket '8 is provided with a cut away portion, an opening, and a lug which are correspondingly proportioned to the hereinbefore described parts, and the pin 11 of the slot also has adjacent its end an elongated slot so that it may interlock with the socket in the above described man- From the foregoing description of the construction and 01 eration of this device, the manner of applying the same to use and the operation thereof will be readily understood, and it will be seen that l have provided a simple and eilicient device for carrying out the objects of this invention.

I claim The combination with a drill having a rectangular shaped socket in its rear end, one side of said socket being cut away a predetermined distance i'rom the open end, the opposite side of the socket having an open-- ing therein extending from opposite the inner edge of said cut away portion to a point adjacen' the inner end of the socket, a lug projecting laterally and inwardly of the first mentioned side of the socket opposite the last mentioned opening and adjacent its in ner edge, a stock, and a pin projecting therefrom at one end, said pin having an elongated longitudinally extending slot adjacent its extremity, and the pin adapted to engage said socket to interlock the drill and stock, the lug being positioned in said slot to lock the same and to allow limited endwise movement of said members. I

in testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WILLIAM RUNYAN. Vitnesses: EDGAR W. BELL,

VnnNIcn WILsON.

Copies of this patent may be obtained. for five cents each, by addressing the Commissioner of Eatents, Washington, D. G. 

